Anthony wrealsh and william burns



@mitch tartes stwt @fitta t ANTHONY WREALSH AND WILLIAM BURNS, orsPRiNerin-LD, omo.

Letters Patent No. 60,983, dated January 1, 1867.

IMPROVEMENT IN WATER-WHEELS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that we, ANTHONY WREALSH and WILLIAM BURNS, of Springfield,in the county of Clark, and State of .,hio, have invented a new anduseful Improvement in Water-Vlheelsz and we do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the annexed drawings, making part of this specification, inwhich- Figure 1 is a perspective view of the casin g.

Figure 2 is a vertical section.

Figure 3 is a horizontal section on the lins :r cv, iig. 2; and

Figure 4 is a similar section on the line y y, g. 2. I

Figure 5 is a similar section on the line e z, iig. 2.

Figure 6 is a perspective View of a section of the wheel.

We have used the same letters in all the gures in the indication ci' thesame parts. v

Our improvements are made upon the wheel known as the Jouval Turbine, tothe construction of which we makegeneral reference as indicating theconstruction of such portions of the wheel as may not be hereinspecically set forth.`

It is well known that that wheel is one with curved buckets settingradially upon a longitudinal hub through which passes the shaft to whichit is fastened, the water being discharged vertically, and received fromdirectly above the Wheel through guides having an inclination thereverse of that'of the buckets of vthe wheel. These guide plates arecast also radially, between a central hub and an external cylindricalshell, the whole of which we shall call the guide-wheel. The buckets ofthe wheel run within a cylindrical casing supporting the bridge- 1 tree,upon which rests the shaft. This casing and that of 'the guide-wheel areof the same diameter, and the two are bolted together through opposedflanges projecting from the top of one and the bottom of the other.

Such being the ordinary form of the Jouval wheel, our improvementsconsist in regulating the admission of water by the combined action of astationary plate resting upon the guide-wheel, and a revolving gateresting thereupon. Also, in the form of the openings through the gates.Also, in supporting the bush through which passes the shaft uponbracesresting upon the crown ofthe intermediate plate, which braces also, incombination with the crown of the intermediate plate, form a hub uponwhich the gates turn. Also, in forming a bearing for the shaft in theapex of thecrown of the intermediate plate. Also, in the construction ofthe buckets of the wheel. i v

l The following description will enable a person skilled in the arts toapply our improvements in the construction of a Jouval Turbine.

A is the shaft, which is intended to stand vertically, being surroundedby the water in the fore-bay which covers the Wheel. The shaft restsupon the bridge-treeB which is'attached to the inside of the cylinder C,below the wheel. D is the wheel, tothe hub of which the radial bucketsare attached. In the Jouval Turbine these buckets are upon the sameplane, and are subject to the disadvantage that while the water strikesupon the buckets at a uniform velocity, the outer edges of the bucketstravelling-upon a circle of greater radius, move much faster than theinner edge of the buckets describing a smaller circle. n consequence ofthis dierence in velocity, the extremities of the buckets do not yieldas great a percentage of power as the middle section, for-the propervelocity of which under a given head the diameter of the wheel isdetermined, the outer section moving too fast, and the inner section tooslow. The point of greatest contraction of the buckets is at theirpoints, which is the point of maximum pressure. Owing to the diierencein velocity of the sections as mentioned, one .section discharged itswater too soon, the other too late, and the larger the Wheel the greateris the loss of power from this source, for the discrepancy isproportionally increased. To avoid this diilculty we do not make theface of the bucket upon the saine plane as formed by identicalradiivextending across the face of the bucket,

v`but by a combination of two or more planes, parallel with one another,as shown in the'drawings. The part d would-discharge thc water first, asits point is set forward of the point of the part d, but as thesesections are travelling at different velocities, the difference in thelength of their buckets compensates for this, and the water received atthe saine time will be simultaneously' discharged, so that the continuedllow of the current is not disturbed and the general effective act-ionof the wheel improved. We make the .sections UZ cZ of the same width; wealso vary tho proportions of the bucket, as stated in the formula forthe Jouval wheel given by Weishack, in his werk on mechanics. We makethe buckets of the width of one-third of the radius of the wheel,

and the ldepth from top to bottom one-third of the entire diameter ofthe wheel, and the distance between the planes we make onefhalf thelentire width of the bucket `when made in two planes, and one-thirdif-.made in three, and so on in like'proportions. -E is the guide-wheel,composed of two cylindrical rings, E', and intermediate guides,EQvforrncd as in the ,louve-l Turbine. The flange E, projecting from thebottoni of the outer cylindrical ring, isbo'lted toacorrespondin'giizinge, C', projecting from the upper edge of the cylinder'v C, the twoforming a tight continuous cylindrical casing for the Iguides and wheel.The plate F rests upon the guidewheel; it has openings corresponding innumber with .the guides; the sides of' these openings are formed onradial lines, and the area .of each is a little less than half that ofthe top ofthe guide; the plate is so set 'on the guide that, while theopening is directlyT- over the guide opening, the edge of the plate atthe opening shall nearly correspond (or entirely so) with the edge ofthe upturned face of the guide opening, the solid 'part of the plateextending over 'the portion of the guide towards which it curves. Thecentre of the plate, within the gate ring, is raised and turned to atrue circle corresponding with the 4inner face of the ring at H. Thecentre of this hub fits snugly to the shaf A lip, F/formed on theintermediate plate, sustains the box F, which cncloses the spur-wheel I,the shaft I turning, which rises through the box. This spur-wheel gearsinto cofre C I', projecting from' the. exterior face of the gate ring H,and is used to turnthe gates on the intermediate plate F. The gates areformed by a ring resting on the intermediate plate. The openingscorrespond with those of the plate F, and the solid parts H, with' thesolid parts of the plate between the openings. The internal ring H'turns without 'the central raised hub of the plate F, which retains itin pla-ce. Slight projections are formed on the inside of ring H',which, striking against the feet of the braces G", limit the movementofthe gates in each direction so that they shall bepermitted to movefar'enough to entirely cover or entirely open the orifices through theplate F, and no more. The gates should turn in such direction that theywill admit the water on the side of the opening immediately adjoiningthe face of guide. Both sides of the bars Hl are bevelled from thecentre to the lower edge, and the opposed faces of the rings and H areA`similarly bevelled, and the gate ring should be of suoient thickness toform thus funnel-formed'openings into each of the guides. The bush Gr is'constructed with wooden followers, G', regulated by set-screws,- G,enclosing on three sides the shaft A, The bush is elevated upon thethree braces G", which are fastened to the crown of the intermediateplate; thus forming an. elevated lbearing for the lower section of themain driving-shaft, and more perfectly securingits alignment than isdone-when thebearing is nearer the wheel.A

We do not-limit our claim to the precise form of bucket here presented,for -the same eifect would to some 'extent be produced by making twoconcentric sets of buckets, separated by an intermediate cylinder,"ifthe buckets were arranged in relation to one another as are the parts dand d. This we regard as an inferior arrangement.

What we claim as our invention, and desire to secure by Letters Patent,isn 1 1. The buckets D, when constructed with two or more faces d andd', upon diiferent radial planes, substantially as set fr-th.

2. Constructing the inner set of concentric buckets, or faces of thesame bucket al and d', shorter than the outer set, substantially as andfor the purpose set forth.

3. The combination of the guide-wheel E, intermediate plate F, and gatering H, when constructed and arranged substantially as set forth. 4 l 4.The raised crown of the intermediate: pl'ate F, as arranged in relationto and serving as a bearing for the guide ring H, substantially as setforth.

5. The `plate F, when constructed and arra ged between-the guide-wheel Eand gate H, substantially as and for the purpose set forth.

6. The elevated bush G, supported' upon braces resting upon the crown ofthe intermediate plate F, and within the guide ring H, substantially-asand for the purpose set forth.

In testimony whereof they have signed their names to this specificationin the presence of two subscribing witnesses,

ANTHONY WREALSH, WILLIAM BURNS.

Witnesses:

A. P. LINN COCHRAN, WILLIAM BLAKENEY.

